Physics
The splitting of different colours of light in a prism is :

Refraction of light
Disperson of light
Diffraction of light
Reflection of light

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Physics
What is the direction of torque?

Perpendicular to the direction of applied force
Same as the direction of applied force
Parallel to the radius
Opposite to the direction of applied force

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Physics
Which one of the following statements with regard to Jet stream, an upper level tropospheric wave, is not correct?

In summer, the polar front jet achieves its maximum force.
It follows the wave path near the tropopause at elevations of 8 km to 15 km.
It is narrow band of high-velocity wind.
Jet streams are typically continuous over long distances.

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